Home / 139,954.68-193,127.77-78,710.04

Finding the Fourth Proportional to 139,954.68, 193,127.77 and 78,710.04

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Solution

The fourth proportional to 139,954.68, 193,127.77 and 78,710.04 is: 108,614.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,954.68 : 193,127.77 = 78,710.04 : x
  2. Step 2: Convert to fraction form
    139,954.68/193,127.77 = 78,710.04/x
  3. Step 3: Cross multiply
    139,954.68x = 193,127.77 × 78,710.04
  4. Step 4: Simplify right side
    139,954.68x = 15,201,094,501.81
  5. Step 5: Solve for x
    x = 15,201,094,501.81/139,954.68
  6. Step 6: Final answer
    x = 108,614.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.